【摘要】 由于泥浆滤液与地层水矿化度的差别 ,不同探测深度的电阻率测井能很好地反映泥浆侵入的影响。泥浆侵入特性的测井应用包括用冲洗带电阻率识别油气层、水层而不受地层水的影响 ;用简单的三电阻率反演方法即可得到地层真电阻率 ,它与LWD测井的Rt一致 ;用简单的三电阻率反演方法可得到泥浆滤液侵入深度 ,它可反映储集层的流体性质特征 ;用侵入带电阻率模拟法可得到测井条件下储层侵入带饱和度变化、泥浆滤液冲洗油气层程度及其储集层驱替特性更多还原

【Abstract】 Effect of mud invasion on reservoir is inescapable during drilling. The measured resistivity of different depth-investigation can reflect the effect of mud invasion on reservoir due to different salinity between formation water and mud filtrate. Logging applications of mud invasion characteristics include: identification of oil-gas zones and water zones by using the flushed-zone resistivity without any effect of formation water; calculating true formation resistivity which has the same value measured from LWD by using a simple three-resistivity inversion method; at the same time, conducting mud filtrate invasion depth which reflects fluid property; knowing the changes of saturation, extents and properties of driving oil-gas out by mud filtrate using "resistivity transition analog".更多还原